Tamás Orosz | Óbuda University (original) (raw)

Papers by Tamás Orosz

Acta technica Jaurinensis, Apr 28, 2014

SAP, the leading Enterprise Resources Planning System in the World, has been providing different ... more SAP, the leading Enterprise Resources Planning System in the World, has been providing different effective solutions for business requirements for more than 40 years. Therefore SAP tried to follow the changes of the enduser requirements with different user interface solutions. The technology novelties drive the internal developments to support new protocols and offer more visual components. Our paper discovers the possibilities lying on the desk and gives directions to select the most effective technique for a given business need. In the last years the end-user want to have efficient UIs, which bring more potent to the daily work. Beyond offering effective and efficient options we uncovered the power of the different solutions in changing environments as well.

We have made a short review on the GUI technologies used in the business world and their impact o... more We have made a short review on the GUI technologies used in the business world and their impact on Education. Starting from mainframe user interfaces, through the different client-server architectures we show the trends, what kind of surfaces the end-users would like to use. We discuss the reasons why the trends could not always be followed by different kind of systems. Even if such novelties are not accepted by Business, involving them in Education might be advantageous. The goal of this paper is to show the evolution in willing and realization of different approaches and also their affect in learning both at Company and at University level. We mainly focus on HTML based GUIs as well to emphasize the already traditional new era. Our paper collects the evolution of HTML capabilities and the current achievements as well to show the difference between smaller and larger software development companies. As an example we follow the available GUIs offered by one of the leading ERP manufacturers and show the education possibilities, requirements in the different evolution stepping-stones.

ABSTRACT There are several layers of virtualization, which can be combined with ERP installations... more ABSTRACT There are several layers of virtualization, which can be combined with ERP installations. The most popular form is the processing virtualization or hyper-visoring. Our study collects the advantages of the different virtualization layers (sometimes referring to products, solutions) from business application point of view. Application virtualization layer is detailed a bit more than the others, because it can help to the business to innovate to new technologies on lower prices. The application virtualization can be done manually, or with special purpose solutions, or having huge background like Microsoft. The paper describes the basic steps of manual application virtualization, what we have used in our case.

Acta technica Jaurinensis, Jun 23, 2014

Technology changes in the last twenty years accelerated and speeded up the life around the World.... more Technology changes in the last twenty years accelerated and speeded up the life around the World. Nowadays new generations arise having no paper based textual information, technology based and thinking young people are coming to the universities in the next years. The universities and the education systems are currently not prepared to handle the different thinking, living, learning mechanism of them. Our study highlights the possible problems and show a way how to cover in short time the gap and offers new directions as well.

ABSTRACT In software development the companies create new versions to enhance the solution accord... more ABSTRACT In software development the companies create new versions to enhance the solution according to the market requirements and own ideas. On the other hand the ready to use products are not always stable and offer the promised features, so the software should corrected generating new builds and sub versions. These repaired features are delivered as patches or bundles (packages) to the customers. In case of office or home applications the patching or versioning not considers the customers' requirements, just apply the patches and keep or not the configuration. The integrated software, like an ERP solution has generally client/server architecture and is very complex not to consider the configurations. These solutions many times need customer side, project based extensions on different levels like database structure, data-model, functional model, programming, user interface, etc. These extensions should be kept and in some cases redesigned after applying patches or upgrading to new versions. Our paper gives direction how we can build into a software such capability to handle the sustainability and long-term maintenance.

ABSTRACT The processes in the ERP (Enterprise Resource Planning) systems were automatized in the ... more ABSTRACT The processes in the ERP (Enterprise Resource Planning) systems were automatized in the past several years. The evolution of the automation started with process flows, followed by role based task separation. In the same time the systems started to decouple the monolith solutions to smaller pieces to create more flexible components from them. This approach leads the ERP systems to build and offer services for collaborative purposes. The web enablement provided more power with the Web Service technology to drive the technology to follow the SOA (Service Oriented Architecture) design paradigm. The services orientation step over the system and sometime the company boundaries and require integrations on different level. One of these integration layers is the level of composites, where new application above the services can be built. Another layer is the process engine, where the services can be linked together into enhanced workflows defining backend and human activities. This layer is defined as Business Process Management (BPM) for business application. This paper intends to show the requirement of SOA implementation requirements from human point of view and describes the different thinking in design, development and end-user, when BPM and composites are in use.

It can hardly be predicted how a student's complex knowledge is being evolved during a course... more It can hardly be predicted how a student's complex knowledge is being evolved during a course of Physics. Probably that's why such a lecture is usually divided into several parts, containing multiple tests and checkpoints. The effectiveness of the learning process might be evaluated by tests, experiments and problems. However, even if all of these distinct evaluation types seem to reflect a successful knowledge transfer, there could still remain gaps in the understanding process of students. This paper introduces a model based approach of knowledge transfer by means of supporting explanation materials, like charts, videos and animations. A few examples of Physics phenomena in Mechanics describe how the application of multimedia tools can assist in making understood the sense of physics phenomena easier. It is found out that visualization of phenomena in the nature makes the understanding easier in addition to definition, experiments and problems.

We show in this paper our experiences and results in teaching different user interface technologi... more We show in this paper our experiences and results in teaching different user interface technologies. Our focus is one of the biggest ERP solutions, which offers several UI possibilities. We have recognized that different technologies require different knowledge from programming, design, fantasy and robustness aspects as well. On the other hand the students' age, educational environment, graduate level and of course the interest are also important factors how and what to teach them. We show the practical problems and give adequate sequences for different approaches based on our study and experiences.

ABSTRACT SAP implemented a very deep level synchronous connection type based on industry standard... more ABSTRACT SAP implemented a very deep level synchronous connection type based on industry standards, but early enough, in the first releases SAP enhanced this to Remote Function Call protocol and technology. The Remote Function Call technology opened the system to other SAP systems or external applications. Remote function call (RFC) is the fundamental technique for many different communication approaches within SAP solutions. Our document tries to uncover the different capabilities and usability of the SAP communication types like CPI-C, RFC, Q-API, tRFC, etc. In our study we figured out that main points of remote communication usage in a heterogeneous environment where SAP also in place are the business level communication from other SAP system or external application via business application programming interface (BAPI), and the loosely coupled distributed system environment, the ALE (application link enabling) communications based on RFCs.

Periodica Polytechnica Electrical Engineering and Computer Science, 2019

Transformer design is a challenging engineering task, where the different physical fields have to... more Transformer design is a challenging engineering task, where the different physical fields have to be harmonized together to fulfill the implied specifications. Due to the difficulty of this task, it can be separated into several subproblems. The first subproblem, in the pre-concept phase, during the transformer design is the calculation of the cost optimal key-design parameters, where not only the technical but also the economical parameters have to be considered, as well. This subproblem belongs to the most general branch of the non-linear mathematical optimization problems. This paper presents the main directions of the evolution and trends in the power transformer design. Main directions of the considered research and the future trends in the field of preliminary design transformer optimization methods are summarized.

2019 IEEE 17th World Symposium on Applied Machine Intelligence and Informatics (SAMI), 2019

The operation model for cloud-based application has already became the new standard in ERP implem... more The operation model for cloud-based application has already became the new standard in ERP implementations. The model has introduced a new software abstraction layer, which hides the data center model from the customers. This layer covers the architecture, operating system, database and elements. When the layer covers the complexity of the middleware layers, allows the owners to concentrate on implementing the core business logic only. The risk is usually that more and more resources are allocated to the infrastructure; with this model the resources can be balanced with the business side. In the end this will lead to extended application lifecycle, while the core functions of the business logic are totally separated from the recently changing infrastructure layer. Standard merge and release management, starting from pre alpha state and describes the way until the gold release, was changed in this operational model with an agile way release process. This results the overall possibility of always using the latest version of the application always, when using the Software as a Service cloud model. Code refactoring, reusability is a key factor, as having another abstraction layer between the platform specific and the platform independent model. Having the proper abstract transformation layer between these two keeps the application roles separated, and the end user does not have to create a whole IT support organization, because the abstract layer will hide the low level infrastructure. This article focuses mainly to the change management questions which arise when an organization moves from standard data center solution to a cloud based (SaaS) model.The ERP solutions should be redesigned, reconstructed and sometimes rebuilt from scratch to provide continuous versioning, and be able to offer customer services. As the goal is always to be able to provide services at a lower operational cost there must be a solid reusability method in the application. Code refactoring and reusability methods should be changed also, using and implemented on a separated abstraction layer. The transformation layer has to be able to maintain the goals of the reliability of the software product during its whole lifecycle. These middleware layer have to be able to maintain the reusability of the 3rd party software elements, but the commonly used parts have to be in the same format as in the base application.The article shows different ways and possibilities which all can be used for building up an application environment in the cloud using software as a service and the other different service bus like methodologies, and focuses on switching the operation model from the on premise datacenter application to the cloud based SaaS model.

Enterprise Resource Planning Systems provide various core business functions in Financials, Human... more Enterprise Resource Planning Systems provide various core business functions in Financials, Human Resources and Logistics. Oracle and SAP, popular and successful ERP vendors worldwide, continuously improve their products. Standard Query Languages play important roles either during standard or customer developments. Because the execution of Oracle e-Business Suite and SAP Business Suite applications are still based on their relational databases, queries and reports are mainly based on SQL codes designed according to old style, but reliable and robust approaches. It is reasonable to explore how new database technologies and SQL options make changes in design methodologies consequently. This paper discusses some new features of innovative SQL development in SAP, reflecting the effectiveness of innovative options in development. It is found out that developments should designed in a proper way, when old style and new methodologies are balanced for the business functions and also for the company where the developments are introduced.

In recent years, the personal involvement into online social networks grew extensively. The prese... more In recent years, the personal involvement into online social networks grew extensively. The present paper introduces a case of a 17 year-old adolescent girl with psychotic symptoms, where intensive and distorted usage of online social networks was present. The self-image of an average adolescent is highly modified by inputs delivered by online social networks. The long-term consequences of digital networks on mental functioning of adolescents are discussed. Both beneficial (information flow, social support) and harmful effects (paradox isolation, psychopathologies) should be taken into account for the proper evaluation of the `digital self'.

Implementation of Enterprise Resource Planning Systems usually requires long preparation, brainst... more Implementation of Enterprise Resource Planning Systems usually requires long preparation, brainstorming, design, including detailed re-engineering business processes at large companies. After new business functions have been implemented at enterprise level, it takes some time when the end-users are getting familiar with the concepts, the technology and the daily usage of them. Built-in functions, therefore, make the system reliable, robust and well-known environment. Nevertheless, according to customer and business requirements, it is sometimes necessary to change the scope of business functionalities, the user interfaces. Innovation can have a great impact on business operation at company level. SAP Screen Personas demonstrates how an innovative technology makes easier and comfortable to operate business functions in a simplified user interface. It is also discussed that the role of such new toolset should be considered during a post-implementation ERP process.

… OF PHD STUDENTS IN COMPUTER SCIENCE, 2012

Change management applying comparison of different versions of Dynamics AX István Orosz and Tamás... more Change management applying comparison of different versions of Dynamics AX István Orosz and Tamás Orosz Microsoft Dynamics AX continuously extends functional and technical approaches. ... Keywords: Change Management, Microsoft Dynamics AX, CRM, GP, NAV. 43

2012 IEEE 16th International Conference on Intelligent Engineering Systems (INES), 2012

ABSTRACT SAP, the leading Enterprise Resources Planning System in the World, has been providing d... more ABSTRACT SAP, the leading Enterprise Resources Planning System in the World, has been providing different effective solutions for business requirements for more than 40 years. Therefore, it might be a difficult issue to select proper solutions for a particular business issue. Usage of SAP Logical Databases provides a convenient tool including smart user interfaces, authorizations, linked database tables, etc. Although several SAP ABAP programs, that apply Logical Databases are being replaced by new programs applying more efficient database selection routines, data access efficiency is only a restriction of business requirements efficiency. The goal of our present paper is to emphasize that robust and reliable programming techniques still remain essential building blocks even though they are categorized as obsolete objects in some aspects. As a conclusion the proper application of Logical Databases are considered to be an efficient way of design and create new program developments.

2014 IEEE 12th International Symposium on Applied Machine Intelligence and Informatics (SAMI), 2014

2011 15th IEEE International Conference on Intelligent Engineering Systems, 2011

ABSTRACT Enterprise Resource Planning Systems enable their users to work in several functional ar... more ABSTRACT Enterprise Resource Planning Systems enable their users to work in several functional areas, industry solutions. SAP, the leading ERP System in the World, delivers the newest standard information technology, architecture and methodology when introducing its new product. New features of the introduced product gradually replace the old techniques and approaches. Nevertheless, such informatics systems are more robust to get rid of older techniques immediately. There are still existing important solutions in the SAP systems using old Development tools and methods. There is a lack of learning methodology to bridge the gap of old, reliable and new technology. Present paper demonstrates how old techniques can still exist in the newest SAP architecture. This development example provides our students information about old but efficient Development Tools and Techniques.

2012 IEEE 16th International Conference on Intelligent Engineering Systems (INES), 2012

ABSTRACT Enterprise Resources Planning Systems, ERP, have been successfully applied in business s... more ABSTRACT Enterprise Resources Planning Systems, ERP, have been successfully applied in business since their first appearance. Business portfolios of ERP Suppliers, such as SAP or Microsoft, have gradually been extended and improved to fulfill customers' requirements almost in any functional areas using defined standard business processes. Market leader ERP software providers, however, have to innovate their products continuously. Once a business or technological solution is being integrated in a software component, a further crucial requirement is to provide a long term support and also to take innovation into consideration. The present paper introduces our new approach, a customer-oriented ERP change management methodology, firstly applied to Microsoft Dynamics and SAP User Interfaces.

2011 IEEE 12th International Symposium on Computational Intelligence and Informatics (CINTI), 2011

... István Orosz*, Túri Balázs **, Tamás Orosz*** * Óbudai Egyetem, Budapest, Hungary ** Budapest... more ... István Orosz*, Túri Balázs **, Tamás Orosz*** * Óbudai Egyetem, Budapest, Hungary ** Budapest University of Economic Sciences and Public Administration *** Óbudai Egyetem/AREK, Székesfehérvár, Hungary *orosz.istvan@arek.uni-obuda.hu ... [8] Rita Ősz: Competencies int ...

Acta technica Jaurinensis, Apr 28, 2014

Acta technica Jaurinensis, Jun 23, 2014

Periodica Polytechnica Electrical Engineering and Computer Science, 2019

2019 IEEE 17th World Symposium on Applied Machine Intelligence and Informatics (SAMI), 2019

… OF PHD STUDENTS IN COMPUTER SCIENCE, 2012

2012 IEEE 16th International Conference on Intelligent Engineering Systems (INES), 2012

2014 IEEE 12th International Symposium on Applied Machine Intelligence and Informatics (SAMI), 2014

2011 15th IEEE International Conference on Intelligent Engineering Systems, 2011

2012 IEEE 16th International Conference on Intelligent Engineering Systems (INES), 2012

2011 IEEE 12th International Symposium on Computational Intelligence and Informatics (CINTI), 2011